Electronic control box



FIG. 1 is a front perspective view of an electronic control box showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line portion of the figure drawings showing text and small rectangles on FIG. 6 is included to show unclaimed subject matter only and forms no part of the claimed design. 

The ornamental design for an electronic control box, as shown and described. 